Gyratory crusher.



0. E. BROWN.

GYRATORY CRUSHER.

APPLICATION FILED IAN.4, Isle.

Lmw. vPatented OCI. 31,1916.

WITH/88155 OWEN E. BROWN, OF `WILMINGTON, DELAWARE, ASSIGNOR '13D-AMERICAN MANGANESE STEEL COMPANY, OF AUGFU'S'L., MAINE, A CORPORATION OF MAINE.

GYRATORY CRUSHER.

Specification of letterslatent.

Patenten oet. ai, raie.

Application led January d, 1916.' Serial No. l70,186.

T o all inkom t may concern Be it known that l, OWEN E. BROWN, a citizen of the United States, and a resident of lVilmington, in the county of New Castle and State 0f Delaware, have made and invented certain new and useful Improve- Y shaft, rendering necessary extensive repairs and replacements.

The present invention renders the sh1ft ing and displacement of the mantle practi cally impossible, and also-protects the shaft against mutilation and injury, even though the hardest class of ores be crushed.

Other objects and advantages will appear as the description proceeds, wherein it is to be understood that changes in the precise embodiment of my invention'can be made within the scope of what is claimed without departing from the spirit thereof.

The preferred embodiment of my invention is disclosedin the accompanying drawings, wherein:

Figure 1 is a view in perspective of the crusher shaft'with the head and mantle assembled thereon and securely locked in position, the construction and arrangement possessing the characteristic features of my invention; 1 `ig."2 is an enlarged View in longitudinal section of the crusher head mantle and accompanying parts, the crusher shaft being represented in elevation.

Referring specifically to the several views, the crusher' shaft 10 is provided with the ledge 11 containing the threads 12 thereon, a second and somewhat larger threaded ledge 13 being formed adjacent the ledge 11.

Mounted upon the crusher shaft, and secured thereto by the key 15, is the usual type of crusher head 14, the smaller end of the crusher yhead being located adjacent the threaded portion 13 of the shaft. A wearing mantle 1G, of cone shape, and preferably formed of manganese steel, is positioned upon the head 14, Zinc keys 17 being introduced between the mantle and head so as to reduce the internal surface of the mantle which must be ground to effect a fit with the head'14. 1n order to prevent the relative rotation of the mantle and head 14, the end plate 18 is provided with the outstanding lugs 19, the same itting within suitable recesses 20 within the mantle and the corresponding and registering recesses 21 within the crusher head, these lugs, in turn, holding the end plate 18 against rotation.

1n vorder to hold the end plate 18 in rigid alinement with the external surface of the mantle 16, and to further prevent the mutilation of the threads 13 of the shaft by the end plate, a locking collar 2t is secured to the threaded portion of the shaft and is formed with the ring 25 and integral sleeve 26, the latter being of relatively smaller external diameter than the ring 25, and proiegts within the opening 22 within the end plate 18. The locking collar 21 being internally threaded, is held against movement with respect tothe shaft, and the sleeve 26, fitting within the space 23 between the opening within the end plate and the shaft, offers a rigid support for the end plate.

The usual type of lock nut 27 is secured to the threaded portion 12 of the shaft, and, contacting with the locking collar 2-1, holds the same against reversed rotation. The large area of Contact between the locking collar 24 and threaded ledge 13, results in the rigid securement of the mantle 16, and eliminates all likelihood of the threads of the shaftv being stripped by high and exeesslve forces being brought to bear upon a limited number of the threads. The construction further prevents the end plate 18 from pounding against the threads of the shaft, and therefore allows it to be made of material harder than the shaft itself.

What 1 claim is 1. The combination of a'crusher shaft having a threaded portion thereon, a crusher` head fixed to said shaft and provided with end recesses, a wearing mantle mounted upon said crusher head and provided with recesses extending inwardly from the smaller end thereof and registering with the said crusher head recesses, an end plate abutting against said wearing mantle and crusher head, and provided with outstanding lugs fitting within said recesses, said gne ' end plate provided with an opening therein relatively larger than the diameter of the threaded portion of said shaft, an internally threaded locking collar engaging the threaded portion of said shaft and formed with a reduced ledge receiving the said end plate thereon, and a lock nut engaging said locking collar.

2..'lhe combination of a Crusher shaft provided with a threaded portion thereon, a Crusher head mounted upon and fixed to said shaft, adjacent the threaded portion thereof, and provided with end recesses, a wearing mantle mounted upon said crusher head and provided with end recesses registering with the end recesses of said crusher head, an end plate abutting against the recessed extremity of said wearing mantle and provided with outwardly extending lugs fitting within the alined recesses of said OWEN E. BROWN.

Witnesses:

GEO. T. CoMLY, MARY G. LANDERS. 

